Resawing-machine



P. R. LEE. RESAWING MACHINE.

(No Model.)

No.1483,226. Petented Sept. 27, 1 92.

UNITED STATES PATENT OFFICE.

FRANK R. LEE, OF LEAD HILL, ARKANSAS.

RESAWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 483,226, datedSeptember 27, 1892.

Application filed June 2, 1891. Serial No. 394,836. (No model.)

To all whom, it may concern:

Be it known that I, FRANK R. LEE, a citizen of the United States,residing at Lead Hill, in the county of Boone and State of Arkansas,have invented certain new and useful Improvements in Resawing-Machines;and I do declare the following to be a full, clear, and

V exact description of the invention, such as will enable others skilledin the art to which it ap pertains to make and use the same.

My invention relates to woodworking-machines in which a board or otherpiece of timber is planed, matched, and split or cut in two at the sametime; and it consists in certain improvements in the construction andcombination of parts of such a machine, as will be hereinafter morefully set forth.

In the accompanying drawings, Figure 1 is a perspective view of myimproved machine, and Fig. 2 is a detail longitudinal section.

Referring to the drawings, 1 represents a frame, which may be of wood ormetal and upon which the table 2 is secured, as also a portion of thedriving mechanism 3, the remaining portion of the driving mechanismbeing shown upon a separate stand 4. The table 2, which is formed into abed at its top, is provided with the feed-rollers 5, 6, and 7, the upperand lower planer-heads 8 and 9, the side heads 10 and 11, and therevoluble saw 12. The feed-roller 5 is driven by a sprocket-chain 13from a small sprocket-wheel 14 on one end of a short shaft 14', which issuitably j ournaled in a bearing at one corner of the table 2, whichshaft also carries a large sprocket-wheel 15. Thewheel 15 is driven byasprocket-chain 16 from the smaller wheel 17 at the bottom of the table,which is secured to one end of a short shaft 18, the opposite end of theshaft having the larger wheel 19 secured thereto. The larger wheel 19 isdriven by the belt 20 from the main shaft of the driving mechanism,which receives its motion from any suitable motor through the smallpulley 22 at one end. In this manner a very powerful feed is secured, asa smaller Wheel is arranged to drive a larger one, which alwaysincreases the power in protion to the difference in size of the twowheels. The feed-roller 6 is driven from the roller 5 by the chain 23and the roller 7 from the roller 6 by the chain 24, the feed-rollers allbeing geared to travel at the same rate of speed and the two in front ofthe planer-head being grooved or fluted, as shown, to give a better gripupon the board, while the other roller 7 is smooth, as it must engagewith the board after it has been planed or smoothed ready for use, andwould indent the surface if it were rough or uneven. The pressure of therollers in front of the planer-heads is regulated by the ordinarypressure-bar and straps 11, which are secured at their lower ends to thehandle or lever 25. A weight 26 is loosely secured upon the lever, sothat it can be shifted toward or from the fulcrum or pivoted end of thelever to give the degree of pressure required. The pressure of thesmooth roller 7 may be regulated by securing it in slotted bearings 2727 and securing it by suitable means at any point in the slots after ithas been arranged to give the pressure required; or the bearings 27 27maybe yielding or elastic, which will give it suflicient pressure tokeep the board in place. The upper planerhead 8 is driven from thepulleys 28 28 upon the shaft 21, each end of the planer-head beingprovided with a driving-pulley 29. The

lower planer-head 9 is driven in a corresponding manner from the pulleys3O 30 upon the shaft in the stand 4. The relative distance between theupper and lower planer-heads to correspond with thicker or thinnerlumber is regulated or adjusted by means of the ordinary screw-shaftsand bevel-gearing 31. The matching or side heads 10 and 11 are journaledat their lower ends in lugs or supports 32 upon the lower portion of theframe2 and are each provided with a driving-pulley 33 and driven fromthe pulley 34 upon the shaft 21.

The resawing mechanism consists of the flat circular saw 12, which issecured to the upper end of the shaft 35, which is journaled at itslower end in a bearing 36 upon a curvilinear bracket or frame 37. Thebracket 37 is provided with slots 37 b for the passage of bolts 37 whichtake through the curved face of the supporting-frame 37, whereby it willbe seen that the bearing 36 may be shifted to one side or the other toadjust and adjustably fix the saw with respect to the matching-heads 10and 11. The shaft is provided with a driving-puL ley 38, by means ofwhich it and the saw are driven from the pulley 39 upon the shaft on thestand 4. The height of the saw above the top of the table 2 is adjustedor regulated by means of a set-screw39, that bears against the bottom ofthe shaft in the bearing 36, While the upper end of the shaft 35 isjournaled in a bearing 40, suitably secured in a curvilinear slot 41 ofthe table, through which the shaft or arbor 35 passes.

Adjustably secured by a set-screw 43 upon the shaft or arbor 35 beneaththe bearing is a collar 42, which is designed to bear against thebearing 40 and prevent a casual upward movement of the shaft 35 and thesaw carried thereby.

When it is not desired to use the saw, it can be taken out of the tableby means of one bolt in the box that holds the shaft.

In use the mechanism is all put in motion by the belting and gearingabove described, and the lumber to be operated upon is passed in underthe feed-rollers 5 and 6. The upper and lower planer-heads then smooththe upper and lower surfaces and the sides or edges are smoothed by theside heads, which may also tongue and groove it for matching or joining,and it is then passed on to the resawing mechanism, where it is split orcut in two pieces longitudinally. The teeth of the saw can be theordinary plane teeth, if desired, which will dress or smooth thesurfaces, as well as split the lumber in two.

Having thus described my invention, but

without limiting myself to the exact construc tion shown, I claim 1. Ina resawing-machine substantially as described, the combination, with themain frame having the supporting-frame 37 provided with a curved face,the saw-table having the curvilinear slot, and the matchingheads 10 and11, arranged above the saw-tahis in advance of the slot, of theadjustable curvilinear bracket 37, having the slots 37 and carrying thebearing 36, bolts taking through the slots of the bracket'37 and intothe curved face of the supporting-frame below the table, an upright sawarbor or mandrel stepped in the'bearing 36 and having its upper endpassing through the slot 41 in the sawtable, the horizontally-disposedsaw mounted on the upper end of the arbor or mandrel, and a set-screwcarried by the bearing 36 for adjusting the arbor or mandrel and the sawvertically, substantially as specified.

2. In a resawing-machine substantially as described, the combination ofthe horizontallydisposed vertically and laterally adjustable saw, thepressure-roller 7, arranged above said saw and having a verticaladjustment, the matching-heads 10 and 11., arranged in advance of thesaw and upon opposite sides of a longitudinal line drawn through thecenter of said saw, the upper planer-head 8, arranged in advance of thematching heads and above the horizontal plane of said matching heads,the lower planer-head 9, arranged in advance of the upper planer-head 8and in a horizontal plane below that of the matching-heads, and thefeed-rollers 5 and 6, arranged in advance of the planer-head 9 and abovethe horizontal plane of said head and having a vertical play, alladapted to operate substantially as specified.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK R. LEE. Witnesses:

GEORGE F. MGCLARY, CHARLES L. PATTERSON.

